With the rapid development of intelligent communications [1]}, [2]}, [3]}, [4]}, [5]}, [6]},
mobile-edge computing (MEC) has been deemed as a promising technology for future communications due to that it can improve the computation capacity of users in applications, such as, augmented reality (AR) [7]}.
With MEC, users can offload the tasks to the MEC servers that are located at the edge of the network.
Since the MEC servers can be deployed near to the users, network with MEC can provide users with low latency and low energy consumption [8]}, [9]}, [10]}, [11]}.
